Pat the salmon dry, then season with garlic powder, salt, and pepper. Lightly coat each piece in flour, shaking off extra so the crust stays thin and crisp. This step helps the sauce cling beautifully later.
Heat the butter and olive oil in the skillet until hot and shimmering. Place the salmon pieces in gently and cook until golden on both sides, letting them brown without fully cooking through. Remove and set aside to keep the pieces intact and juicy.
Pour in the broth (or wine), lemon juice, zest, and capers. Let the mixture bubble and reduce so the flavors concentrate, giving you a bold base for your creamy sauce.
Lower the heat and stir in the heavy cream, letting it thicken for a couple of minutes. Add the salmon back and spoon some sauce over it as it finishes cooking. Let everything simmer gently until the salmon flakes easily and the sauce tastes rich and balanced.